Having
the foresight to use currently available materials in innovative ways
has changed product designs throughout history. Opportunities for
improvement exist with any design and below are some of the
advancements made by introducing new ideas to an existing problem.
Any problem can be solved using the materials in the room.
-Edwin Land (American Inventor and Founder of Polaroid)
Throughout
history many major industrial and technological advances have owed
themselves to the creative application of a new material to an old
problem. Looking back to our earliest advancements, entire periods of
human history like The Stone Age and The Bronze Age are known for the
material that was commonly applied. Just as the application of papyrus
as a medium for capturing written communication (in place of stone or
wood) led to transportable and widely available knowledge and
information, the application of silicon as a semiconductor has
dramatically increased computing capacity and availability in our
lifetime. These new applications of available materials and the
advancements they supported lead to revolutions in the way humans live
and work and are foundational to our way of life today.
Many
innovations have been made in bearing applications ranging from deep
earth mining to space exploration by putting available materials to use
in new ways. From Ceramic to Stellite, Stainless Steel to Sapphire,
the problems solved are as diverse as the materials applied. From the
wooden roller bearings used by ancient civilizations to the aerospace
materials of today, the selection of available materials continues to
increase. Will the innovation that changes the rules and competitive
landscape in your industry come from you? It may be as simple as
applying one of these specialty materials to your challenging problem.
What is the challenge in your most difficult application? Corrosion,
heat and excessive wear are all factors that existing bearing materials
overcome for specific applications. Below is a list of common bearing
materials and their basic advantages.
|
Material
|
Specification
|
Features and Advantages
|
Hardness Rc
|
Operating Temp. Limit F°
|
| 52100 |
AMS 6444 |
Low cost and good wear properties |
58-65 |
Up to 400° * |
| 440 C |
AMS 5618 |
Low cost, good wear properties and corrosion resistance |
56-62 |
Up to 825° * |
| DD 400 |
N/A |
Low cost and premium finish and corrosion resistance |
58-62 |
350° |
| 17-4 PH |
AMS 5643 |
Good machinability, high strength and corrosion resistance |
28-42 |
Up to 572° * |
| M50 |
AMS 6491 |
Excellent fatigue properties and high temperature capabilities |
60-64 |
975° |
| BG42® |
AMS 5749 |
Corrosion resistance and high temperature capabilities |
61-65 |
950° |
| Nitrogen enriched steel |
AMS 5898 |
Extreme corrosion resistance |
60-64 |
850° |
| Cobalt-based alloys |
AMS 5759 |
Chemical resistance and high temperature stability |
50 (min.) |
1000° |
| Stellite® |
AMS 5894 |
Corrosion Resistance, good wear properties and high temperature capabilities |
33-43 |
930° |
| M50 NiL |
AMS 6278 |
Can be carburized, high fracture toughness and high temperature capabilities |
Case hardness: 60 (min.) |
975° |
| BG42® is a registered trademark of Latrobe Steel Company. |
* Depending on Heat Treat Method |
| |
| STELLITE® is a registered trademark of DELORO STELLITE COMPANY, INC. |
If you have a difficult application or recurring bearing problem please contact your NPB sales rep to discuss a new material solution today.
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NATIONAL PRECISION BEARING GROUP of Mechatronics, Inc.
Phone: 800-426-8038 • 425-222-5900 • Fax: 888-448-1153 • 425-222-5950
E-mail: sales@nationalprecision.com
Copyright © 2011, National Precision Bearing, Inc.
|
